Notes on the calculations

Collaboration puzzles are counted here as by Women if there is at least one female constructor. In other words, the Men columns include only puzzles where all contributors are male.
One could argue that this over-states women's contributions and their more accurate percentages are even lower.

Percentages more than one third or less than one tenth are color coded.

In the tables above, 1993 and 2016 are partial years so they are grayed out with no color coding.